KOSDFOGE Helmet Headphones - BT5.0 Stereo

Specification: Item Type: Helmet Headphones Material: ABS BT Version: 5.0 Frequency: 2.402GHz-2.480GHz BT Distance: 10m-20m / 10.9-22.0yd (Depending on the Environment Around the Device Such As Obstacles) Microphone Transmission Distance: ≤1m Built in Battery: 3.7V / 450mAh x 2 Li ion Batteries (Ship with Inbuilt Battery) Playing Time: ≤16 Hours Charging Voltage: 5V Charging Time: About 3 Hours Standby Time: ≤720 Hours When you press the power button for 3 seconds, the device turns on with a"power on"tone. BT pairing: 6. Switch songs/sound increase/decrease Short press"‑"to switch to the previous song. Press and hold to decrease the volume. Press"+"briefly to switch to the the following song. Press and hold to make the sound louder, and there is a beep when the volume is maximum 7. Voice assist When connected to IOS phone, press and hold the power button for 2 seconds to enable Voice assist, and Voice assist will automatically exit after a few seconds of stopping the conversation. Package List: 1 x Helmet Headphones 1 x Micro USB Charging Cable 1 x User Manual